US3825104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite inking and obliterating typewriter ribbon
Assignee: Dennison Manufacturing Co
•
Filing: 1973-03-26
•
Granted: 1974-07-23
•
Expires: 1993-03-26
Abstract
Abstract A class of ''''self-correcting'''' typewriter ribbons is described, having an inking portion and an obliterating portion, whose members share the common property of having those portions spaced apart from one another by a gap (either edgewise or face-wise) to ensure against transfer of ink to the obliterating material. The gap facilitates manufacture, and in one form, or group of forms, a metallic layer on one of the portions is used to reduce friction in the ribbon guides, improve the appearance of the ribbon, and provide a visual indication to the user that the ribbon is properly installed for use.
Inventors
- 👤 W Wolowitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:34
CPC Classifications
B; B41; B41J; B41J31/00; B41J31/05; B41J31/09
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
67 words
A composite inking and obliterating ribbon for typewriters and the like, comprising a first approximately half-width portion of ink-impregnated textile fabric, and the remaining width-wise portion constituted by a thin, flexible ink-impervious strip overlapping said first portion and secured thereto by said overlapping, said strip providing on one surface thereof a deposit of camouflage transfer material; there being a gap between said first portion and said deposit.
Claim 2
Dependent Claim
67 words
A composite inking and obliterating ribbon for typewriters and the like, comprising a first approximately half-width portion of ink-impregnated textile fabric, and the remaining width-wise portion constituted by a thin, flexible ink-impervious strip overlapping said first portion and secured thereto by said overlapping, said strip providing on one surface thereof a deposit of camouflage transfer material; there being a gap between said first portion and said deposit.
Claim 3
Dependent Claim
28 words
A structure in accordance with claim 1, and a major part of the other surface of said strip beyond the gap being covered by an opaque ink-impervious layer.
Claim 4
Dependent Claim
15 words
A structure in accordance with claim 2, in which said opaque layer is specularly reflective.
Claim 5
Dependent Claim
16 words
A structure in accordance with claim 2, in which said opaque layer is metallic in appearance.
Claim 6
Dependent Claim
14 words
A structure in accordance with claim 2, in which said opaque layer is metallic.
Claim 7
Dependent Claim
34 words
A structure in accordance with claim 1, in which said fabric and said strip are mutually heat-sealable, and in which they are secured together by means of an intermittent heat seal, stitching or suture.
Claim 8
Dependent Claim
69 words
A composite inking and obliterating ribbon for typewriters and the like, comprising a first approximately half-width portion of ink-carrying plastic film, and the remaining width-wise portion constituted by a thin, flexible ink-impervious strip overlapping said first portion and secured thereto by means of said overlapping, said strip providing on one surface thereof a deposit of camouflage transfer material; there being a gap between said first portion and said deposit.
Claim 9
Dependent Claim
69 words
A composite inking and obliterating ribbon for typewriters and the like, comprising a first approximately half-width portion of ink-carrying plastic film, and the remaining width-wise portion constituted by a thin, flexible ink-impervious strip overlapping said first portion and secured thereto by means of said overlapping, said strip providing on one surface thereof a deposit of camouflage transfer material; there being a gap between said first portion and said deposit.
Claim 10
Dependent Claim
35 words
A structure in accordance with claim 7, in which said plastic film and said strip are mutually heat-sealable, and in which they are secured together by means of an intermittent heat seal, stitching or suture.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |